Electronic cigarette



FIG. 1 is a front elevational view of an electronic cigarette showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top perspective view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines in the drawings illustrate portions of the electronic cigarette which form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 